Optimization of bolt rod material used in rock-burst roadway bolting

被引：0
|
作者：
Lin J. [1 ,2 ]
Wu Y.-Z. [1 ,2 ]
Ding J. [3 ]
Yang J.-H. [1 ,2 ]
He J. [1 ,2 ]
机构：
[1] Coal Mining and Designing Department, Tiandi Science and Technology Co., Ltd., Beijing
[2] Coal Mining and Designing Branch, China Coal Research Institute, Beijing
[3] Anyang Longteng Steel Manufacturing Co., Ltd., Anyang
来源：
Lin, Jian (linjian_w@163.com) | 1600年 / China Coal Society卷 / 41期
关键词：
Bolting; Optimization; Roadway; Rock-burst; Rod material;
D O I：
10.13225/j.cnki.jccs.2015.0616
中图分类号：
学科分类号：
摘要：
The conventional mechanical property tests and mechanical performance tests under the impact load of three bolt rod material of HRB400, HRB600 and CRM600 were conducted in the laboratory in view of large deformation and bolt fracture problem in the rock-burst roadways. The test results show that the bolt rod material of CRM600 can not only meet the requirements of conventional roadway support, but also show a superior instantaneous extension performance and energy absorption ability under impact loading. The total deformation of CRM600 bolt rod material under transient impact loading is 7.9 times of HRB600 bolt rod material, and 1.5 times of HRB400 bolt rod material. The total absorption energy of CRM600 bolt rod material in the whole impact process is 4.2 times of HRB600 bolt rod material, and 2.1 times of HRB400 bolt rod material. CRM600 bolts overcomes the problem of bolt rod break in the underground industrial test of roadway bolting support under rock-burst, and the deformation of roadway was effectively controlled. ©, 2016, China Coal Society. All right reserved.
引用
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页码：552 / 556
页数：4
相关论文
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